Oh, yeah, it's totally possible - just do a HN search and you'll find people who are doing it (e.g. Andrew Kelley, the Zig designer - and he's making a programm

Oh, yeah, it's totally possible - just do a HN search and you'll find people who are doing it (e.g. Andrew Kelley, the Zig designer - and he's making a programming language, which nobody will pay for in this day and age!). However, like being a social media "influencer" (e.g. Twitch streamer), it requires a lot of both hard work and luck, has a limited amount of "capacity", and isn't a viable source of income for most people.